Gas-meter.



Patented Mar. 6, I900.

V. KONOPINSKI.

GAS METER.

Application filed July 6, 1899.)

(No Model.)

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NITED STATES PATENT Fries.

GAS-METER.

' SPECIFICATION forming part of Letters Patent No. 644,611, dated March6, 1900.

Application filed July 6, 1899. Serial No. 722,924. (No model.)

To all whom it may concern:

Be it known that I, VALENTINE KONOPIN- sKI, a citizen of the UnitedStates, residing in the city and county of Philadelphia, State ofPennsylvania, have invented a new and useful Improvement in Gas-Meters,which improvement is fully set forth in the following specification andaccompanying drawings.

My invention relates to gas-meters; Y and it consists more especially ofan improved construction of a gas-meter diaphragm into which the gas isintroduced, said diaphragm being constructed of a single piece ofleather or similar material, whereby no joints exist or are necessaryand the device is rendered exceedingly effective under all conditionsand the liability of leakage is reduced to a minimum.

It further consists of novel details of con struction, all as will behereinafter fully described, and particularly pointed out in the claims.

Figure 1 represents a front elevation of a gas-meter, illustrating adiaphragm embodying my invention, a portion of the meter being shownbroken away. Fig. 2 represents a section on line so :10, Fig. 1. Figs. 3and 4 represent, on areduced scale, perspective front and rear views ofthe gas-meter diaphragm to which my invention especially relates.

Similar letters of reference indicate corresponding parts in thefigures.

Referring to the drawings, A designates a gas-meter, and B the diaphragmtherefor of leather or similar material.

In carrying out my inventionIfirst cut out a disk of leather or similarmaterial of the requisite diameter, having a substantiallycentralopening 0 therein, after which the peripheral edges of the disk areturned upwardly over a suitable form, and the leather having been Wettedand stretched to the desired extent is left to dry and shape itself oversaid form, the latter being of such contour as to give the leathersubstantially the contour in cross-section seen in Figs. 3 and i,wherefrom it will be seen that the peripheral portion D becomessubstantially conical in shape, the cross-section thereof having theinclined sides E and F, while the upturned edges G serve as a means forfastening the diaphragm in position upon the flanged portion H of theplate J, said flanged portion be= ing provided with an annular recess K,into which the edge G of the diaphragm is compressed by means of thewire L.

M designates a plate which is secured to the diaphragm at the last stageof its manufac ture by means of the rivets N or similar fas= teningdevices.

P designates an inlet to the interior of the diaphragm, the sameengaging a nipple Q, which is exteriorly threaded and held in positionby the flanged nut R, the flange of the latter bearing upon the washerS, whereby the leather of the diaphragm is held in the desired positionbetween said washer and the adjacent portion of the plate M.

T designates an opening or recess in the plate J, which is bridged bythe dome-shaped portion U, which is secured thereto in any suitablemanner.

Especial emphasis is laid upon the feature of having the diaphragm Bconstructed of a single piece of material without joints and secured inthe manner described, since by this construction liability of leakage isreduced to a minimum and a simple and eifective device is produced whichis not readily liable to get out of order.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A gas-meter diaphragm composed of a single piece of material, andcomprising a side wall having its peripheral portion consisting of twomembers, one of said members being laterally deflected and extendingoutwardly from the edge of said wall proper, the other of said membersextending inwardly from the outer edge of the first-mentioned member anddiverging therefrom, a laterally deflected flange at the inner edge ofsaid last-mentioned member, and a plate having a flange secured to saidflange.

2. In a gas-meter, a diaphragm composed of a single piece of materialand having an opening in the center thereof, the peripheral edges ofsaid diaphragm being deflected, a plate having an inwardly-extendingflange engaged by said edges, fastening devices for holding saiddiaphragm in position upon said flange, a plate attached to the outerportion of said diaphragm, an inlet-pipe for the interior of saiddiaphragm,an exteriorly-threaded .nipple holding said pipe in position,aflanged verging therefrom,a laterally-deflected flange at the inner edgeof last-mentioned member, a plate forming the other side wall of thediaphragm and having a lateral flange situated Within the flange of saidmember, said flange of the plate being provided with an annular recess,and fastening devices for securing said flanges together, said fasteningdevices compressing the flange of said member into the recess of saidother flange.

VALENTINE KONOPINSKI.

lVitnesses:

JOHN A. WIEDERSHEIM, E. HAYWARD FAIRBANKS.

